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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7641293 | Offset track An offset track forms a pattern perpendicular to the centerline of the track which enables tracks to be formed with even or odd number of metal inserts and thus accommodate virtually any tracked vehicle. The offset track uses variations in body thickness and lug wid... | 01/05/2010 |
| 7524001 | Rubber crawler A rubber crawler has a structure in which connecting members are sequentially fitted onto wing portions adjacent to each other without using steel cords for resisting tensile force applied to the rubber crawler. Accordingly, the rubber crawler of the present inventi... | 04/28/2009 |
| 7407236 | Elastic crawler An elastic crawler having a crawler main body including an endless belt of rubber-like elastic material that is driven by friction with a friction drive wheel. A plurality of guide projections protrude from the inner circumferential surfaces of both lateral edge por... | 08/05/2008 |
| 7325888 | Rubber crawler having excellent straight driving property A rubber crawler having a very good straight driving property is obtained by modifying a method of embedding bias cords in a rubber crawler and neutralizing shear stresses caused by tensile load of bent portions of the crawler when the crawler is entrained about a v... | 02/05/2008 |
| 7293844 | Rubber crawler track A rubber crawler track (1) has an endless rubber belt-shaped rubber crawler track main body (2) formed of a rubber elastic body and core metal pieces (3) embedded in the rubber crawler track main body (2) at predetermined intervals in a c... | 11/13/2007 |
| 7201457 | Rubber crawler and crawler traveling equipment Rubber crawler equipment (1) capable of reducing the weight and cost of a rubber crawler, and providing a lightweight and fast drive for tires and crawlers, wherein core members (5) formed of plastic material instead of metal are embedded in a rubber c... | 04/10/2007 |
| 7131709 | Core bar for rubber crawler and rubber crawler A core bar for a rubber crawler includes: right and left wing parts; an engaging part for connecting the wing parts; right and left protrusions to guide a rolling wheel; and right and left outside rails that are formed on outer sides of the right and left protrusion... | 11/07/2006 |
| 7077485 | Rubber crawler A core-less rubber crawler has a guide protrusion protruding from an internal surface of a rubber main body in the shape of an endless belt, and the protrusion extends in the lengthwise direction of the rubber main body at the center with respect to the widthwise di... | 07/18/2006 |
| 7063396 | Endless track with various hardnesses for a recreational vehicle An endless track for a recreational vehicle, such as a snowmobile on all-terrain vehicle, is formed of an endless body made of rubber material having a ground engaging side and an inner side, the outer side displaying a series of longitudinally spaced profiles exten... | 06/20/2006 |
| 7036893 | Rubber crawler and its manufacture method The object of the invention is to provide a rubber crawler which has an excellent driving performance without rubber breakage and a process for manufacturing the same. The object is attained by firstly obtaining a small bending rigidity of a joint part and eliminati... | 05/02/2006 |
| 7014279 | Elastic flat tread The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, ... | 03/21/2006 |
| 6984006 | Elastic flat tread The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1, ... | 01/10/2006 |
| 6964462 | Rubber crawler A rubber crawler includes parallel embedded tensile strength bodies, with each of tensile strength bodies being connected by butt portions. The butt portions of adjacent tensile strength bodies are longitudinally shifted relative to one another in a circumferential ... | 11/15/2005 |
| 6942305 | Elastic crawler An elastic crawler having a crawler body formed of a rubber elastic material into an endless belt so that rollers rotatively move on right and left side regions in an inner surface of the crawler body is provided with a reinforcement rising in a thickness direction ... | 09/13/2005 |
| 6932442 | Elastic-bodied crawler An elastic-bodied crawler, in which damages, such as local wear, coming-off of driven projections and the like in use, are prevented from being brought about, and frictional resistance is decreased at engaging portions to provide for durability, comprises a body wit... | 08/23/2005 |
| 6913330 | Endless track and a manufacturing method thereof An endless track includes an iron link belt, a continuous pad, and a connecting device. The iron link belt includes a link unit assembly constructed of a plurality of link units connected to each other. Each link unit includes a pair of links. The iron link belt may... | 07/05/2005 |
| 6805416 | Core bar for rubber crawler and rubber crawler A core bar for a rubber crawler includes: right and left wing parts; an engaging part for connecting the wing parts; right and left protrusions to guide a rolling wheel; and right and left outside rails that are formed on outer sides of the right and left protrusion... | 10/19/2004 |
| 6722746 | Resilient crawler and method of manufacturing the same In a resilient crawler of this invention, sufficient flexibility at the portion between the lugs is obtained and such problems as separation of rubber are prevented while improving riding comfort by reducing the difference in rigidity between the portion where the l... | 04/20/2004 |
| 6652044 | Rubber crawler A rubber crawler has a core of generally parallelepiped blocks (5) each having two longitudinally spaced through holes (9) in the lower surface region and bars (4) inserted in the through holes (9), the generally parallelepiped blocks (5) being arranged i... | 11/25/2003 |
| 6568769 | Elastic flat tread The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core (1, 11, 115) of a core (1,... | 05/27/2003 |
| 6520603 | Low-noise endless crawler belt having embedded core bars and detachable crawler shoes The crawler belt 20 is structured of a plurality of inner shoes 21; a plurality of outer shoes 30 arranged to oppose each of the inner shoes; an endless ring-shaped rubber belt member 26 retained between the inner shoes and outer shoes respectively opposi... | 02/18/2003 |
| 6474755 | Rubber crawler A rubber crawler includes an endless rubber belt directed around two toothed wheels, whereby in the circumferentrial direction of the rubber belt parallel metal core elements are embedded in the rubber belt and extend in cross direction of the rubber belt... | 11/05/2002 |
| 6290009 | Swivel working vehicle When a conventional swivel working vehicle is constructed such that a real part of a swivel body is not extended beyond a traveling device in order to improve an operability at a small site, a balance weight must he significantly increased in weight so as... | 09/18/2001 |
| 6170925 | Rubber crawler A rubber crawler has a rubber elastomer constituting a main body of the crawler, at least one metal core buried in the rubber elastomer and extending in a widthwise direction perpendicular to a running direction of the crawler, and at least one rubber lug... | 01/09/2001 |
| 6106083 | Rubber crawler A rubber crawler has a rubbery elastomer constituting a main body of the crawler. At least one metal core is buried in the rubbery elastomer and extending in a widthwise direction perpendicular to a running direction of the crawler. At least one rubber lu... | 08/22/2000 |
| 5447365 | Rubber track assembly A rubber track assembly comprising a driving wheel, an idler wheel, an endless rubber track extending around the driving wheel and the idler wheel and having a plurality of rubber lugs formed on its outer circumference and a plurality of rubber guide proj... | 09/05/1995 |
| 5399003 | Core bar member for rubber crawler, and rubber crawler device The present invention relates to a core bar member for rubber crawler device in which a middle-flanged rolling wheels or outer-flanged rolling wheels are used, and a rubber crawler device in which the core bar members are adopted, and it is an object of t... | 03/21/1995 |
| 5380076 | Rubber crawler belt of a tracked vehicle The rubber crawler belt, employed in a tracked vehicle such as a construction machine, is a short pitch crawler belt which reduces the level of vibrations and noise caused during travelling of the vehicle, increases tractive power and rigidity of the craw... | 01/10/1995 |
| 5308155 | Core bar member for rubber crawler and rubber crawler device A core bar member for a rubber crawler which includes a pair of projections, each having an upper face and left and right wing portions, the upper faces of the pair of projections protruding to a fixed height upward and having protruding parts having a wi... | 05/03/1994 |
| 5295741 | Core bar for rubber track and rubber track traveling device A core bar for a rubber track includes wings on both sides to be embedded in an elastic member of the rubber track, a bridging center for connecting the wings, and driving protrusions provided on both sides of the bridging center and projecting from the i... | 03/22/1994 |
| 5145242 | Elastic endless crawler An elastic endless crawler has cords arranged in a crawler body composed of elastic materials such as an endless belt-like rubber material in and along the longitudinal direction of the crawler body. Main cord layers are embedded in the crawler body to re... | 09/08/1992 |
| 4587280 | Tank tread pad and composition for making A tank tread pad and composition for making. A tank tread pad is formed from a polymeric material which is formed by an inter penetrating polymer network comprising a first urethane component and a second resinous component which cures under different con... | 05/06/1986 |
